Microstructure and Properties of Diffusion Boride Layer on Die Steel
Diffusion boride layer has been produced on the surface of a hot work tool steel. The microstructure and elemental spectra as well as depth profiles of the elements in the boride layer have been studied by scanning electron microscopy, X-ray diffraction analysis and energy dispersive X-ray spectrometry. Micro-hardness measurement was carried out using the Vickers micro-hardness test. The results showed that the boride layer is formed by boron compound Fe2B. Additionally, boron carbide B4C has been revealed embedded in the bulk of the boride layer.
Andreas Öchsner, Graeme E. Murch and João M.P.Q. Delgado
M. Beznák et al., "Microstructure and Properties of Diffusion Boride Layer on Die Steel", Defect and Diffusion Forum, Vols. 312-315, pp. 788-793, 2011